理工类B级模拟试题：阅读判断Irradiating Food
Irradiating fruits， vegetables， pork and chicken to kill insects and bacteria has been approved by the Food and Drug Administration over the past decade or so. Irradiation of other meats， such as beef and lamb， is being reviewed. Federal approval does not require that industry adopt the process， and few food processors presently offer irradiated products.
Market studies have shown that many consumers are afraid that eating irradiated foods may cause cancer， despite scientific studies that prove the safety of treated foods. Some people argue that more severe government inspection， higher food-safety standards， and more careful-preparation practices by consumers are all that is needed to ensure that food is safe. Consequently， companies currently see no need to spend millions of dollars outfitting processing plants with the equipment necessary for a process that very few shoppers are in favor of.
All supermarkets that sell irradiated food must label the food either directly on the packaging， or， in the case of bulk items like fruits and vegetables， by placing a sign nearby. There is no requirement for the labeling of irradiated food served by chain restaurants or hospitals that buy directly from distributors， nor any regulations for products that contain irradiated ingredients.
Presently， the FDA allows food to be treated with three types of radiation -- gamma rays， high-energy electrons， and X rays -- and sets limits on doses， depending on the type of food. The principle is that the dose to be used for a certain type of food should not exceed the amount that is sufficient to kill most harmful insects and bacteria present in it. Different types of food， because of their molecular compositions， may require different doses of radiation.
1. According to the passage， killing insects and bacteria present in foods by irradiating is not completely approved by the US government.
A. Right B. Wrong C. Not mentioned
2. There are quite a number of food processors which are interested in producing irritated foods.
A. Right B. Wrong C. Not mentioned
3. Some consumers are doubtful of the safety of irradiated foods and suggest a more severe government inspection be taken.
A. Right B. Wrong C. Not mentioned
4. Some companies foresee the promising future of setting up food processing factories， although they do not see the need now.
A. Right B. Wrong C. Not mentioned
5. It is required that labels placed on irradiated food or nearby bulk items such as vegetables and fruits should indicate irradiated ingredients.
A. Right B. Wrong C. Not mentioned
6. Restaurants can serve irradiated food bought directly from distributors without labeling it.
A. Right B. Wrong C. Not mentioned
7. The passage tells us that FDA approves irradiating food to some extent but irradiated food is not widely accepted.
A. Right B. Wrong C. Not mentioned
答案：1. A 2.C 3. A 4. C 5. B 6. A 7. A
解析：
1. A.解析：注意： 在看题干时尤其需要注意题干中出现的修饰词 --形容词/副词。利用专有名词“US government”作为答案线索词，这样在第1段找到答案相关句(第1，2，3句)。发现它们的说法与问题句的说法一致，所以判定答案正确。
2. C.解析：注意句中出现的修饰词“a number of”，利用“food processors/食品加工厂”作为答案线索词，这样在第一段的最后一句中找到答案相关句，发现该句并没有提到食品加工厂的兴趣问题，所以判定判断该句的说法为“没提到”。
3. A.解析：判断该句说的较客观，所以可能正确。借助原文：利用“safety，severe government inspection”作为答案线索词，这样第2段的第1句和第2句中找到答案相关句，发现它们的说法与问题句的说法一致，因此判断为“正确”。
4. C.解析：利用“companies，promising future”作为答案线索词，这样在第2段的最后一句找到答案相关句，发现该句并没有提到预测被辐射食品的未来前景问题。
5.B.解析：利用“labels，irradiated ingredients，indicate ”作为答案线索词，这样在第3段发现答案相关句群，对比这些句子的说法发现它们的说法与问题句的说法不一致，因此判定问题句的说法错误。
6. A.解析：利用“Restaurants，distributors”作为答案线索词，关注题干中的状语结构-without labeling it，这样在第3段的第2句找到答案相关句，判定问题句的说法正确。
7. A.解析：注意：有关文章主题的题，注意看文章的开头或/和结尾的句子。这道题是有关文章主题的题，借助文章的结尾：Presently， the FDA allows food to be treated with three types of radiation (与approves irradiating food to some extent呼应)，而文章开头的句意也与该问题句的说法一致，所以答案为正确。